I had to make a painting and general login so you don't need to sign up to test it.

http://paintthing.com/painting/5447c3fcc03941c9089178fa

To log in and paint email: showhn@gmail.com password: test

I also made a video of me drawing the only thing I know how

https://www.youtube.com/watch?v=-fz6BGqcIjE